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A requisite for unmanned aircraft systems (UAS) to operate within a controlled airspace is a capability to sense and avoid collisions with non-cooperative aircraft. Ground-based transmitters and UAS-mounted receivers are preferred due to the limitations on the size, weight and power of UAS. This paper assumes a constant velocity motion of an intruder (target) aircraft and presents a method to estimate...
A passive radar system that coopts digital broadcast (DAB/ DVB) signals is appealing but challenging: a single-antenna receiver system can only measure a bistatic range/range-rate; and, due to the energy-efficient multitransmitter commercial implementation, there is a confounding uncertainty as to which transmitter (illuminator) was responsible for a given “hit.” In a companion paper we proposed some...
A multiple-input multiple-output (MIMO) radar can improve system performance with waveform and spatial diversities. Mathematically, the multiple independent waveforms increase the dimension of signal space, so optimal transmission power allocation deserves investigation. The majority of the literature prefers to omit the effect of propagation attenuation, and considers the receiving gain vectors to...
MIMO radars may outperform conventional ones as regards target detection, parameter estimation and classification via spatial and waveform diversities. MIMO radar is a kind of shared spectrum system: the mutual interference among the waveforms may lead to considerable performance degradation, especially with multiple targets. As a result, preserving MIMO radar performance under such conditions via...
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